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Trouble drawing

Started by MrPickle Aug 23, 2008 at 11:23 AM 1 replies 850+ views
Original Post
MrPickle
MrPickle
I was following microsoft's tutorials on DX10 and I've got to the cube drawing and rotating but the cube isn't being rendered. When my cube wouldn't render I tried building Microsoft's code and the cube didn't render with their code either. I don't know why as I'm completely new to D3D. Here's my code: 
#include <windows.h>
#include <d3d10.h>
#include <d3dx10.h>

#pragma comment (lib, "d3d10.lib")
#pragma comment (lib, "d3dx10.lib")

struct						BasicVertex { D3DXVECTOR3 Position; D3DXVECTOR4 Color; };
int							Width = 640, Height = 480;
HWND						hWnd;
HINSTANCE					hInst;
D3D10_DRIVER_TYPE			D3D_DriverType = D3D10_DRIVER_TYPE_NULL;
ID3D10Device*				D3D_Device = NULL;
IDXGISwapChain*				SwapChain = NULL;
ID3D10RenderTargetView*		RenderTargetView = NULL;
ID3D10Effect*				Effect = NULL;
ID3D10EffectTechnique*		Technique = NULL;
ID3D10InputLayout*			VertexLayout = NULL;
ID3D10Buffer*				VertexBuffer = NULL;
ID3D10Buffer*               IndexBuffer = NULL;
ID3D10EffectMatrixVariable* WorldVariable = NULL;
ID3D10EffectMatrixVariable* ViewVariable = NULL;
ID3D10EffectMatrixVariable* ProjectionVariable = NULL;
D3DXMATRIX					World;
D3DXMATRIX					View;
D3DXMATRIX					Projection;

LRESULT CALLBACK WndProc( HWND , UINT, WPARAM, LPARAM );
HRESULT InitD3D( void );
void Cleanup( void );
void Render ( void );

int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd )
{
	WNDCLASSEX wc;
	ZeroMemory( &wc, sizeof( WNDCLASSEX ) );

	wc.cbSize			= sizeof( WNDCLASSEX );
	wc.style			= CS_HREDRAW | CS_VREDRAW;
	wc.lpfnWndProc		= WndProc;
	wc.cbClsExtra		= 0;
	wc.cbWndExtra		= 0;
	wc.hInstance		= hInstance;
	wc.hCursor			= LoadCursor( NULL, IDC_ARROW );
	wc.hbrBackground	= (HBRUSH)(COLOR_WINDOW + 1);
	wc.lpszMenuName		= NULL;
	wc.lpszClassName	= TEXT( "Win32Test" );

	if( !RegisterClassEx( &wc ) )
	{
		MessageBox( NULL, TEXT( "Unable to register window class." ), TEXT( "Error" ), MB_OK | MB_ICONERROR );
		return FALSE;
	}

	hInst = hInstance;
	hWnd  = CreateWindowEx(  NULL, wc.lpszClassName, TEXT( "Win32 Test" ), WS_OVERLAPPEDWINDOW,
							 CW_USEDEFAULT, CW_USEDEFAULT, Width, Height, NULL, NULL, hInstance, NULL);

	if( !hWnd )
	{
		MessageBox( NULL, TEXT( "Unable to create window." ), TEXT( "Error" ), MB_OK | MB_ICONERROR );
		return FALSE;
	}

	ShowWindow( hWnd, nShowCmd );

	if( FAILED( InitD3D() ) )
	{
		MessageBox( NULL, TEXT( "Unable to initialize Direct3D 10." ), TEXT( "Error" ), MB_OK | MB_ICONERROR );
		return FALSE;
	}

	MSG msg = {0};
	while( WM_QUIT != msg.message )
    {
		if( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) )
		{
			TranslateMessage( &msg );
			DispatchMessage( &msg );
		}

		Render();
    }

	Cleanup();
	return msg.wParam;
}

LRESULT CALLBACK WndProc( HWND hWnd, UINT Message, WPARAM wParam, LPARAM lParam )
{
	PAINTSTRUCT pc;
	HDC hdc;

	switch( Message )
	{
		case WM_PAINT:
			hdc = BeginPaint( hWnd, &pc );
			EndPaint( hWnd, &pc );
			break;

		case WM_DESTROY:
			PostQuitMessage( 0 );
			break;

		default:
			return DefWindowProc( hWnd, Message, wParam, lParam );
	}

	return 0;
}

HRESULT InitD3D( void )
{
	HRESULT Result = S_OK;

	D3D10_DRIVER_TYPE DriverTypes[] = { D3D10_DRIVER_TYPE_HARDWARE, D3D10_DRIVER_TYPE_REFERENCE, };
    UINT numDriverTypes = sizeof( DriverTypes ) / sizeof( DriverTypes[0] );

    DXGI_SWAP_CHAIN_DESC sd;
    ZeroMemory( &sd, sizeof( sd ) );

    sd.BufferCount							= 1;
    sd.BufferDesc.Width						= Width;
    sd.BufferDesc.Height					= Height;
    sd.BufferDesc.Format					= DXGI_FORMAT_R8G8B8A8_UNORM;
    sd.BufferDesc.RefreshRate.Numerator		= 60;
    sd.BufferDesc.RefreshRate.Denominator	= 1;
    sd.BufferUsage							= DXGI_USAGE_RENDER_TARGET_OUTPUT;
    sd.OutputWindow							= hWnd;
    sd.SampleDesc.Count						= 1;
    sd.SampleDesc.Quality					= 0;
    sd.Windowed								= TRUE;

    for( UINT DriverTypeIndex = 0; DriverTypeIndex < numDriverTypes; DriverTypeIndex++ )
    {
        D3D_DriverType = DriverTypes[DriverTypeIndex];
        Result = D3D10CreateDeviceAndSwapChain( NULL, D3D_DriverType, NULL, D3D10_CREATE_DEVICE_DEBUG,
												D3D10_SDK_VERSION, &sd, &SwapChain, &D3D_Device );
        if( SUCCEEDED( Result ) )
            break;
    }

    if( FAILED( Result ) )
        return Result;

	ID3D10Texture2D* BackBuffer;
    Result = SwapChain->GetBuffer( 0, __uuidof( ID3D10Texture2D ), ( LPVOID* )&BackBuffer );
    if( FAILED( Result ) )
        return Result;

    Result = D3D_Device->CreateRenderTargetView( BackBuffer, NULL, &RenderTargetView );
    BackBuffer->Release();
    if( FAILED( Result ) )
        return Result;

    D3D_Device->OMSetRenderTargets( 1, &RenderTargetView, NULL );

    D3D10_VIEWPORT vp;
    vp.Width	= Width;
    vp.Height	= Height;
    vp.MinDepth = 0.0f;
    vp.MaxDepth = 1.0f;
    vp.TopLeftX = 0;
    vp.TopLeftY = 0;
    D3D_Device->RSSetViewports( 1, &vp );

	Result = D3DX10CreateEffectFromFile( TEXT( "Basic.fx" ), NULL, NULL, "fx_4_0", D3D10_SHADER_DEBUG, 0,
										  D3D_Device, NULL, NULL, &Effect, NULL, NULL );

	if( FAILED( Result ) )
    {
        MessageBox( NULL, TEXT( "The FX file cannot be located." ), TEXT( "Error" ), MB_OK | MB_ICONERROR);
        return Result;
	}

	Technique			= Effect->GetTechniqueByName( "Render" );
	WorldVariable		= Effect->GetVariableByName( "World" )->AsMatrix();
    ViewVariable		= Effect->GetVariableByName( "View" )->AsMatrix();
    ProjectionVariable	= Effect->GetVariableByName( "Projection" )->AsMatrix();

	D3D10_INPUT_ELEMENT_DESC Layout[] =
	{ 
		{ TEXT( "POSITION" ), 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D10_INPUT_PER_VERTEX_DATA, 0 },
		{ TEXT( "COLOR" ), 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D10_INPUT_PER_VERTEX_DATA, 0 },
	};
	UINT numElements = sizeof( Layout ) / sizeof( Layout[0] );
	
	D3D10_PASS_DESC PassDesc;
    Technique->GetPassByIndex( 0 )->GetDesc( &PassDesc );
    Result = D3D_Device->CreateInputLayout( Layout, numElements, PassDesc.pIAInputSignature,
											PassDesc.IAInputSignatureSize, &VertexLayout );
	if( FAILED( Result ) )
		return Result;

	D3D_Device->IASetInputLayout( VertexLayout );

	BasicVertex Vertices[] =
    {
        { D3DXVECTOR3( -1.0f, 1.0f, -1.0f ), D3DXVECTOR4( 0.0f, 0.0f, 1.0f, 1.0f ) },
        { D3DXVECTOR3( 1.0f, 1.0f, -1.0f ), D3DXVECTOR4( 0.0f, 1.0f, 0.0f, 1.0f ) },
        { D3DXVECTOR3( 1.0f, 1.0f, 1.0f ), D3DXVECTOR4( 0.0f, 1.0f, 1.0f, 1.0f ) },
        { D3DXVECTOR3( -1.0f, 1.0f, 1.0f ), D3DXVECTOR4( 1.0f, 0.0f, 0.0f, 1.0f ) },
        { D3DXVECTOR3( -1.0f, -1.0f, -1.0f ), D3DXVECTOR4( 1.0f, 0.0f, 1.0f, 1.0f ) },
        { D3DXVECTOR3( 1.0f, -1.0f, -1.0f ), D3DXVECTOR4( 1.0f, 1.0f, 0.0f, 1.0f ) },
        { D3DXVECTOR3( 1.0f, -1.0f, 1.0f ), D3DXVECTOR4( 1.0f, 1.0f, 1.0f, 1.0f ) },
        { D3DXVECTOR3( -1.0f, -1.0f, 1.0f ), D3DXVECTOR4( 0.0f, 0.0f, 0.0f, 1.0f ) },
    };

    D3D10_BUFFER_DESC bd;
    bd.Usage			= D3D10_USAGE_DEFAULT;
    bd.ByteWidth		= sizeof( BasicVertex ) * 8;
    bd.BindFlags		= D3D10_BIND_VERTEX_BUFFER;
    bd.CPUAccessFlags	= 0;
    bd.MiscFlags		= 0;

    D3D10_SUBRESOURCE_DATA InitialData;
    InitialData.pSysMem				= Vertices;
    InitialData.SysMemPitch			= sizeof( Vertices );
    InitialData.SysMemSlicePitch	= sizeof( Vertices );
    Result = D3D_Device->CreateBuffer( &bd, &InitialData, &VertexBuffer );
    if( FAILED( Result ) )
        return Result;

	BasicVertex *Data = NULL;
	if( SUCCEEDED( VertexBuffer->Map( D3D10_MAP_WRITE, 0, reinterpret_cast< void** >( &Data ) ) ) )
    {
      memcpy( Data, VertexArray, sizeof( SimpleVertex ) * 8 );
      VertexBuffer->Unmap( );
    }

    UINT Stride = sizeof( BasicVertex );
    UINT Offset = 0;
    D3D_Device->IASetVertexBuffers( 0, 1, &VertexBuffer, &Stride, &Offset );

    DWORD Indices[] =
    {
        3,1,0,
        2,1,3,

        0,5,4,
        1,5,0,

        3,4,7,
        0,4,3,

        1,6,5,
        2,6,1,

        2,7,6,
        3,7,2,

        6,4,5,
        7,4,6,
    };
    bd.Usage = D3D10_USAGE_DEFAULT;
    bd.ByteWidth = sizeof( DWORD ) * 36;
    bd.BindFlags = D3D10_BIND_INDEX_BUFFER;
    bd.CPUAccessFlags = 0;
    bd.MiscFlags = 0;
    InitialData.pSysMem		  = Indices;
    InitialData.SysMemPitch	  = sizeof( Indices );
    InitialData.SysMemSlicePitch  = sizeof( Indices );
    Result = D3D_Device->CreateBuffer( &bd, &InitialData, &IndexBuffer );
    if( FAILED( Result ) )
        return Result;

    D3D_Device->IASetIndexBuffer( IndexBuffer, DXGI_FORMAT_R32_UINT, 0 );

    D3D_Device->IASetPrimitiveTopology( D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST );

    D3DXMatrixIdentity( &World );

    D3DXVECTOR3 Eye( 0.0f, 1.0f, -5.0f );
    D3DXVECTOR3 At( 0.0f, 1.0f, 0.0f );
    D3DXVECTOR3 Up( 0.0f, 1.0f, 0.0f );
    D3DXMatrixLookAtLH( &View, &Eye, &At, &Up );
    D3DXMatrixPerspectiveFovLH( &Projection, ( float )D3DX_PI * 0.5f, Width / ( FLOAT )Height, 0.1f, 100.0f );

	return S_OK;
}

void Render( void )
{
    static float t = 0.0f;
    if( DriverType == D3D10_DRIVER_TYPE_REFERENCE )
    {
        t += (float)D3DX_PI * 0.0125f;
    }
    else
    {
        static DWORD TimeStart = 0;
        DWORD TimeCur = GetTickCount();
        if( TimeStart == 0 )
            TimeStart = TimeCur;
        t = ( TimeCur - TimeStart ) / 1000.0f;
    }
    D3DXMatrixRotationY( &World, t );

    float ClearColor[4] = { 0.0f, 0.125f, 0.3f, 0.0f };
    D3D_Device->ClearRenderTargetView( RenderTargetView, ClearColor );

    WorldVariable->SetMatrix( (float*)&World );
    ViewVariable->SetMatrix( (float*)&View );
    ProjectionVariable->SetMatrix( (float*)&Projection );

    D3D10_TECHNIQUE_DESC TechDesc;
    Technique->GetDesc( &TechDesc );
    for( UINT p = 0; p < TechDesc.Passes; p++ )
    {
        Technique->GetPassByIndex( p )->Apply( 0 );
        D3D_Device->DrawIndexed( 36, 0, 0 );
    }

    SwapChain->Present( 0, 0 );
}

void Cleanup( void )
{
    if( D3D_Device )		D3D_Device->ClearState();
    if( VertexBuffer )		VertexBuffer->Release();
    if( VertexLayout )		VertexLayout->Release();
    if( Effect )			Effect->Release();
    if( RenderTargetView )	RenderTargetView->Release();
    if( SwapChain )			SwapChain->Release();
    if( D3D_Device )		D3D_Device->Release();
}
I noticed that if I change: D3D_Device->DrawIndexed( 36, 0, 0 ) to D3D_Device->Draw( 12, 0 ) I get a yellow triangle at the bottom of the screen?
Here to learn :)
dkx187
dkx187
i might be able to help you if i know where the tutorial is.
MrPickle
MrPickle
It comes with the August 2008 SDK or bits of it here.
Here to learn :)

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